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Finding the Fourth Proportional to 195,315.20, 292,972.80 and 148,659.20

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Solution

The fourth proportional to 195,315.20, 292,972.80 and 148,659.20 is: 222,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,315.20 : 292,972.80 = 148,659.20 : x
  2. Step 2: Convert to fraction form
    195,315.20/292,972.80 = 148,659.20/x
  3. Step 3: Cross multiply
    195,315.20x = 292,972.80 × 148,659.20
  4. Step 4: Simplify right side
    195,315.20x = 43,553,102,069.76
  5. Step 5: Solve for x
    x = 43,553,102,069.76/195,315.20
  6. Step 6: Final answer
    x = 222,988.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.